'can't call method a"val" on an undefined value' error with PDF::API2

[sivaramanm]

hello monks

I want to convert pdf files to jpeg files

I tried as follows

use PDF::API2;
    #
    $pdf = PDF::API2->new;
    $pdf = PDF::API2->open('c:\temp.pdf');
    $page = $pdf->page;
    $page = $pdf->openpage($pagenum);
    $file = 'c:\/siva.jpeg';
    $img = $pdf->image_jpeg('siva.jpeg');

But I got an error as can't call method a"val" on an undefined value at C:\perl\site\lib\PDF\API2\Resource\XObject\Image.pm line 99

pls help me

Thanks

Siva

2006-08-07 Retitled by planetscape, as per Monastery guidelines: one-word (or module-only) titles hinder site navigation

( keep:0 edit:17 reap:0 )

Original title: 'pdf2jpeg'

[andyford]

What happens when $pagenum is set to some number?

[lorn]

Do you need to do that with perl? you can do with convert, that come in ImageMagick package.

[McDarren]

Hello sivaramanm,

I think you are a bit confused here. Firstly, it appears to me that you have simply copied/pasted the code example from the PDF::API2 synopsis, and expected it to somehow magically do what you want. That's not going to happen :)

You have $pdf = PDF::API2->new;, immediately followed by $pdf = PDF::API2->open('c:\temp.pdf');. So which is it? Are you creating a new PDF object/file, or opening an existing one?

You then do $page = $pdf->openpage($pagenum); - that is attempting to open a page at a non-defined page number (hence the error).

Finally, you have $img = $pdf->image_jpeg('siva.jpeg');. Now I may be wrong here (as I've not used this module before), but from a quick read of the docs I get the understanding that the image_jpeg method will create an image object from an EXISTING jpeg file. Which is probably the opposite to what you were expecting.

So it appears to me that PDF::API2 may not be able to do what you want, and you may instead need to look at ImageMagik's convert, as lorn suggested.